Question

47. If theta is angle between the velocity and acceleration
of a particle moving on a circular path with
decreasing speed, then
(1) theta = 90°
(2) 0° < theta< 90°
(3) 90° <theta < 180°
(4) 0° <_theta < _180°
48. If speed of an object revolving in a circular path is
doubled and angular speed is reduced to half of
original value, then centripetal acceleration will
become/remain
(1) Same
(2) Double
(3) Half
(4) Quadruple

please answer step wise and with reason...​

Answer 1

Explanation:

hope it helpssssss

for 28).

Answer 2

Answer:

Explanation:

The explanation is in the image itself.